Drying-machine.



I To all whom Z! may] concern i are secured sectional elevation 'side of. the drying chamber ,1Il2llllll' of supporting the ronvej-lel's.

,tho cndlesu aprons l) UNITED STATES 'PATENT OFFICE:

JOHN H. LORIMER, F PHILADELPHIA, PEifINS YLVANiA, ASSIGNOB 'TOiWILLIAMB;

LGRIMER, TRUSTEE, OF

PHILADELPHIA, PENNSYLVANIA.

Be it known that I, Join: II. Lonmucug' "a citizen of the, United Stalea;and"'resident the. city and "county of Pli iladelphiufand State of leunsylvania,- lnwe'inveutcd an Immovementin Drying-Maehinos, of which; the following is"' a ispecitication. 1 3 Y My, invention has reference todrving ma; chines foi textile or other.materials and conv of 'certaii'i improvements which are fully set forth in the following specification;

and shmvu in the accompanying drawings which form a part-'tli'ereof.

"lho object? of myinvenlio'n is to provide a machine for drying and hu ii'iditying yarn or loose fibrous materialv 4 i--=my kind and "thcinveulimi is so constructed that positive;

control of the, characterand direction of the.

drying air currents may be. had asiwell as of the temperature and relative humidity,

My invention (-onsisls of certain features of cmistruct-ion whereby the above, objects said 'l'eatuws of ctfuBtru'ction being fully described hereinafter and-more. spccifimlly delined in the claims.

'Ilel'erring lo the di'a\\'in 1f: Figure l is a of my iufprovcd drying machine taken on line. l/-]/ oE 2; Fl". 2 is a sectional plan view of the, same taken on line :c'-w of Figl l; Fig.1, is' a eross sectional viciv oi the same taken on line 2-2 of Hi 2; and Fig. l is a cross section at one showing the A; is the dr viu c eliamber'through which are caused to travel and by which the materials to be treated are conveyed through the drying chamber.

H is a heating;- chamber aud'urranged to one side of the drying ehamber and'eommunirating will: it at the top bv ulongitudinal opening I. This chamber ll is provided with Steam healing coils N for heating the air to be. circulated through-the drying chamber A and is also provided with one or more. circulating tam or blowers I which force air into the. eluunbei it near the.

. boll o n opposite sides.

lnclosing thedryinjf'bhamber A and the is an outer ease 'lt forming an outer chamber said chamber pret- (trably cxlei'idin over thotop and the. two- 'lhe. lRit-itjlfi of the drying chamber A conmmnicat-cs with the bottom of Specificatioiiof Letters Patent. Applicationfiled August 1:0 910, Serial No.

circulation lo cumlxnszlte for the air feeding .cnd.

Patented u 5-,'191 3,- 576,528.

Z imeside of the outer chamber S shown at U and the bottom of the other side of the outer cha-niberopens into the bottom of the heating 'chamber through the fans or blowerg I. In this way the air not only circulates through the'dryi'ng chamber A and heating chamber .H, but also around them; the case R for causing said circulation constituting 'a virtuai jacket about the-said drying and heating chambers. 1

The outer chamber 5 may have a valved outlet 0 at the top open to the atmosphere to permit the escape of more-pr less of the air from 'said chamber and also a valved inlet O' at the bottom near the fans or blow to enter the allowed to escapetheretrom through the valved outlet 0.

A valve 1. maybe employed to eontrol'the recirculation of the. air through the outer ehal'nber S and to insure in a piisitiveiminner; more or leak: of the air passing Out-of ers I for permitting fresh air circulation into the atmosphere, such as would I be advisable when the materials being, dried .were very moist, or damp Ill which case-it is desirable to remove the moist airfr'om the ginachine. It is preferablethatthe valve P be located near the VillYkLiULltltEt 0,.but this is not. essential.

The endless aprons l; and C are causedto travel close together for a portio'irof the circuit and then separate at-the feeding and delivery ends. These. aprons are guided about guide-wheels I), E" and F at theends of the machine- :md apron l) is guided 'ulSo about the drums G and 1),- the fornier being at the delivery end and the latter at the More specifically, the apron B is guided boutthe drums G and D,

whoreas the apron C is guided about the guide wheels 1 and both aprons B and C- are ruidod about. the remaining guide- 'whee s E and E. Thearrows indicate the direction of travel of the aprons through the drying" chamber A. The apmns may be able manner and are preferably formed driven in any Suitwith sidesprocket. chains K which are supported and guided by the angle iron guidesL and-f M as more fully shown in Fi". 4.

The aprons are formed of open or meshed metals with cross bars at intervals, but this construction may be modified if desired. The wheels E,

1) mid to are. preferahly spizd." Keft whels' to mesh with the-sprooketchainfli of.

the aprons.

As it is desirable a beams to exiaminejthe material durin its passage through themachine, I prolviile aidoor' W having- .a; glass Wtlirough'jwhich to examineall of the to provide access to the chamber A an is arran ed wit hin a pa'ssageo'r alcove in the side-o the outer chamber S as clearly shown at W in*Fig. 2. The widtli of this door isonlyjust sufficient topermit ofth-e proper manipulations of the operator, so-asfnot'to remove moreof the outer chamber-S than is absolutely necessary:

Theoperationwillnowbeunderstood; The

aprons being put-into motion with the materials to be dried conveyed betweenlthem, the

arecaused to pass back and forth throng the drying chamber .a nu mberroftimes before Ibeing finally discharged." Duringflthetravel of the material -andf' aprons-in this manner, the air is put into circulatlon by the fans or blowers I; The air is forcedithrough the. heating coils N and iii heated condition of the chamber A. The heated air then passes. downward through the aprons and materialconveyed thereby, and passesout atthe bottom oflthe chamber the out- "let' [II 'The air then passes u'pwa'rd'through 't-heouterchamber S then over the top of" the chambers A' and H andtheu dQWI WYard to the circulating' fans; or blowers I. In this 'rn'annerithe same*hated air may be 'recirculated,-butit is customary to allowsome of the air- -to escape iby the valved passage 'O and a corresponding'quantity of freshiair to enter the circulation'by theyinlet valved passage 0.; 'By this arrangement the moistureladen airescapes after leaving'thedryingfchamber' whereas" the fresh air enters I adjacent to the fans-or blowers I.

. ItQwill be observedthatby jacketing the chambers A and ,H by the" chamber S a more uniform temperature within the chamber A may be had and the machine may be operated with; a given temperature 'at a I ,materially less consumption of steam. The "machine maybe operatedwithia substant ially constant' temperature with lesscare than heretofore with machines -0f-this class where there was no jacketing' of the drying chamber with the circulating heated 7 air."

Tn those cases Wheii'the materials areireso quiredtdbeconditioned as by'fgiving to them the desired humidit I provide the heating chamber Hxwith a-humldifier T by which :the-air may 'bejnaintainedgat the desired relative humidity, and this humidiing compartmentiscaused-to pass; lTheagene I eral shape of the apparatus maybechangd I ing chamber as desired.ff;' passes through the aperture Jinto the top "I claim as new and;desireto sec I I 1.r In afdryingrjmachiiie; la

the drying chamber, means or j the air is caused to circ l l: rtefatter c5 fier may be of any suitable construction, the

particular forin of it being immaterial to my invention. 1 r

While in most casesof theiuseof myinvention the conveye'rs will bei i the form of aprons so as to hold-loosefibrous material i'ng machinesibe ng well known it wil Llnot be necessary to further illustrate or describe. a

them. I v- My invention is not restricted toany p'arv ticular means for conveying thee-materials to be dried'ithrough' the dryi ng,. chamber and what is shownanddescribed' forthis;- purpose is by way 'of example only andot, I as a limitation of the scopeof suchidetailsf The essential [featureof my'--inven tion re-' 1 sides in the employment ofj' the. outehffor jacketing compartment through whic erably the air which passes th-roughth and the materials may. beconveyed one-or I more times back and vforth'throughthefd While I have shown my invention in-the form- I prefer, Ido not restrict: myslf'ftoa the details thereof asthese'may be without departing fromthe it} nfi ai -l a a Having now described my invent ters Patent is J I i mg her combined w'ithl endless conve conveying; the material to be dri ing air through the drying-c a direction transversely, .to fthegrdrrect travel of theconveyers, an inclos'ing ber extending over the smegma-ts drying chamber and through iwhic the is caused to circulateafter leavingithe d ing chamber,- means for-heating 'the circu-. lating air before it is admitted to'-the dr ing I chamber,'means for removing part-fd the 1 5 circulating air, and means--,for.:iulmitting.- fresh air into the circulation; y f

2. In a drying machine, aTli-ying elm ber combined with. endless .conveyers for the drying chamber, means foric rc latlng;

air through-the drying chamber in I tical direction;transversely tolthe dire IOIIL ,of travel of the 'conveyers,, an inclosing'jr chamber extending over thc'sides andgtop. v

of the drying chamber and through the drying chamber, communication h we? v the inclosing chamber and tlie'dryingrchirrn her being at the lower part and-{side thedrying chamber, means for guiding the air and admitting it to the upper side portion of the drying chamber, mechanical means for circulating the air, means for heating the circulatin air before it is admitted to the drying chamber, means for removing part of the circulating air, means for admitting fresh air into the circulation, and means for regulating the relative humiditg of the circulating air.

3. In a drying machine, the combination of a drying chamber and a heating chamber arranged side by side and in open communication at the upperportion, conveyers for conve ing the material to be treated transverse y through the drying chamber and across the path of the air currents, an inclosing circulating chamber extendin over the drying and heating chambers an in communication with the bottom of the drying chamber, and a fan for circulating air from the inclosing circulating chamber into the heating chamber.

4. In a drying machine, the combination of a drying chamber and a heating chamber arranged side by side and in open communication at the upper portion at one side of the drying chamber, conveyers for conveying the material to be treated transversely through the drying chamber and across the path of the air currents, an inclosing circulating chamber extending over the drying and heating chambers and in communication ,with the bottom of the drying chamber o'n the other side thereof, means for circulating air from the inclosing circulating chamber into the heating chamber, means for gradually removing a portion of the circulating air, and means for introducing a quantity of fresh air into the circulation correspondin to that removed.

5. In a drying mac line, the combination of a drying chamber and a heating chamber arranged side by side and in open communication at the upper side portion of the drying chamber, con'veyers for conveying the material to be treated transversely through the drying chamber and across the path of the air currents, an inclosing circulating chamber extending over the top and side of the drying and heating chainbers and in communication with the bottom portion of the drying chamber at the side thereof opposite to thecommunication therewith from the heating chamber, means for circulating air from the inclosing circulating chamber into the lower part of the heating chamber, means for gradually removing a portion of the circulating air, means for introducing a quantity of fresh air into the circulation corresponding to that removed, and means arranged in the path of the circulating air for regulating the humidity thereof.

6. In a drying machine, the combination of andrying chamber and a heating chamber arranged side by side and in open com munication at the upper portion of said drying chamber at one side thereof, conveyers for conve ing the material to be treated transverse y through the drying chamber and across the ath of the air currents, an inclosing circ ating chamber extending over both the rying and heating chambers and in communication with the bottom of the drying chamber, means for circulating air from the lower portion of the inclosing circulating chamber on the other side of the drying chamber into the heating chamber, and a door for providing access from outside of the machine into the drying chamber.

7. In a drying machine, the combination of a drying chamber and a heating chamber arranged side by side and in open communication. at the upper portion only, conveyers for conveying the material to be treated transversely through the drying chamber and across the path of the air currents, an inclosin circulatin chamber extending over the drying. and eating chambers at top and sides and in communication with the bottom of the drying chamber only, means for circulating air from the inclosing circulating chamber into the heating chamber, and a transparent door providin access through the side of the drying ciamber from outside of the inclosingchamber whereby the materials being conveyed in the drying chamber may be examined and sampled during the normal operation of the machine.

8. In a drying machine, the combination of a'drying chamber, a heating chamber having an inlet communication with the drying chamber at one level, an outer inlet and outlet communications therewith,

and means for drawing the air out of the outer inclosing chamber at a distance from the outlet connnunication of the drying chamber and forcing it into 't-heheating chamber.

In testimony of which invention, I hereunto set my hand.

JOHN H. LORIMER. \Vitnesses:

R. M. KELLY, E. H. BARLOW. 

